Is golden retriever really smart?

Many people say that Golden Retriever is smart and docile, and I plan to keep it myself, but no friends or relatives around me have ever owned this kind of dog, nor have they seen it with their own eyes. Most of them are learned from the internet? Is it really good and versatile? Friends who have raised golden hair, can you tell me your story of golden hair in detail? After all, I still want to have a dog that can accompany me to the end. Will you regret raising a golden retriever?

Golden retrievers like to bite when they are young, but they lose their hair badly when they grow up. However, I am smart and docile. I can teach my family at will. I can sit down, shake hands (left and right), wait, decide, come over, go over, go out, come in, come up, go down, jump and take a shower without throwing. After washing, let it throw water and it will swing. Go out and wash your feet, let it come, and it will know to wash its feet. Tell him and leave. It's interesting to be upset. If you yell at it twice, it will growl. My family doesn't like barking. It's hard to scream a few times a year. Not mean to people. Children can touch and rarely fight with their peers. When they saw the puppy, they went to say hello.